Results 1 to 10 of about 14,335,537 (251)

Methodological approach to assessing additional active power losses in overhead power lines at non-sinusoidal modes [PDF]

open access: yesE3S Web of Conferences, 2023
Non-sinusoidal voltage in electrical networks is one of the most pressing problems in the field of power quality. In non-sinusoidal modes in electrical networks, in addition to losses of active power at the fundamental frequency, i.e.
Kovernikova Lidiia
doaj   +2 more sources

Powers and Power Factor in Non-Sinusoidal and Non-Symmetrical Regimes in Three-Phase Systems

open access: yesEnergies, 2022
The paper presents several theories related to definitions of powers and power factors in non-sinusoidal and non-symmetrical regimes. The theories must meet some requirements: (a) to facilitate the measuring of power quantities by using acquired ...
Petre-Marian Nicolae   +2 more
doaj   +2 more sources

Non-Parametric Kinematic Optimization of Flapping Foil Propulsion Using a Discrete Adjoint Method [PDF]

open access: yesBiomimetics
Optimizing flapping-foil kinematics for underwater propulsion is challenging due to strong temporal coupling and nonlinear fluid–structure interactions. Most existing approaches rely on parameterized motion profiles, which restrict the accessible design ...
Zhaoran Yin   +4 more
doaj   +2 more sources

A Self-Supplied Power Optimizer for Piezoelectric Energy Harvesters Operating under Non-Sinusoidal Vibrations

open access: yesEnergies, 2023
A self-supplied circuit that is able to significantly increase the power delivered to a bridge rectifier by a Resonant Piezoelectric Vibration Energy Harvester (RPVEH) is presented and discussed.
Luigi Costanzo   +2 more
doaj   +3 more sources

Analysis of the influence of non-sinusoidal and unbalanced network modes on induction motors [PDF]

open access: yesE3S Web of Conferences, 2021
The parameters of electrical network modes do not correspond the requirements GOST 32144-2013 of Russian and the National technical regulation of Vietnam.
Van Cuong Ngo, Kovernikova Lidiia I.
doaj   +1 more source

Non-Zero Crossing Point Detection in a Distorted Sinusoidal Signal Using Logistic Regression Model

open access: yesComputers, 2022
Non-Zero crossing point detection in a sinusoidal signal is essential in case of various power system and power electronics applications like power system protection and power converters controller design.
Venkataramana Veeramsetty   +2 more
doaj   +1 more source

Electromagnetic Compatibility of Compensating Devices and Converters of an Adjustable Electric Drive in Electrical Networks of Industrial Enterprises

open access: yesИзвестия высших учебных заведений и энергетических объединенний СНГ: Энергетика, 2022
The problems of reactive power compensation and improving the quality of electrical energy in the power supply systems of industrial enterprises are inseparable.
V. P. Schasny, A. I. Zhukouski
doaj   +1 more source

Non-Sinusoidal Loading Effect on Oil Immersed Power Transformers [PDF]

open access: yesEngineering and Technology Journal, 2011
Transformers are usually designed for nominal frequency and sinusoidal load current. Nowadays, usage of non-linear loads such as power electronics loads has extremely increased.
Mohammed k.Edan
doaj   +1 more source

Electric Power Loss Minimization in Power Supply Systems for the Suburban Houses [PDF]

open access: yesProblems of the Regional Energetics, 2018
The main purpose of the research is the development and improvement of methods for minimizing power losses for non-sinusoidal and asymmetric modes of operation of power supply systems for suburban houses.
Averbukh М.А.   +2 more
doaj   +1 more source

INSTANTANEOUS AND INTEGRAL POWER EQUATIONS OF NONSINUSOIDAL 3-PHASE PROCESSES

open access: yesElectrical engineering & Electromechanics, 2016
Purpose. To identify the mathematical relationship between the instantaneous powers (classical and vectorial) and integral powers in non-sinusoidal mode and to get complex form of instantaneous powers in 3-phase 4-wire power supply in terms of the ...
Iu.A. Sirotin, T.S. Ierusalimova
doaj   +1 more source

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